package main

import (
	"fmt"
)

func main()  {
	var str = "aa第三方"
	s := []rune(str)
	//l := len(str)
	for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 {
		s[i], s[j] = s[j], s[i]
	}

	fmt.Println(string(s))
}
